Cover and freeze one casserole for up to 3 months. Bake the second casserole, uncovered, at 350° for 45-50 minutes or until a knife inserted near the center comes out clean. To use frozen casserole: Completely thaw in the refrigerator for 24-36 hours. Remove from the refrigerator 30 minutes before baking. Bake, uncovered, at 350° for 50-60 minutes or until a knife inserted near the center comes out clean. Yield: 2 casseroles (6-8 servings each).